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HEIGHT="1" BORDER=0 ALT=""> +</td></tr></table> + + +<!-- block --> +<TABLE bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="http://www.nevrax.org/inc/img/reddots.gif"></TD> + <TD><B>Documentation</B></TD> + <TD ALIGN=RIGHT> </td> +</tr></table> +<!-- Generated by Doxygen 1.2.14 --> +<center> +<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="namespacemembers.html">Namespace Members</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>background_source.cpp</h1><a href="background__source_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 +00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font> +00008 <font class="comment"> *</font> +00009 <font class="comment"> * This file is part of NEVRAX NEL.</font> +00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font> +00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font> +00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font> +00013 <font class="comment"> * any later version.</font> +00014 <font class="comment"></font> +00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font> +00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font> +00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font> +00018 <font class="comment"> * General Public License for more details.</font> +00019 <font class="comment"></font> +00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font> +00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font> +00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font> +00023 <font class="comment"> * MA 02111-1307, USA.</font> +00024 <font class="comment"> */</font> +00025 +00026 <font class="preprocessor">#include "<a class="code" href="stdsound_8h.html">stdsound.h</a>"</font> +00027 +00028 <font class="preprocessor">#include "<a class="code" href="background__source_8h.html">background_source.h</a>"</font> +00029 +00030 <font class="keyword">using</font> <font class="keyword">namespace </font>std; +00031 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC; +00032 +00033 <font class="keyword">namespace </font>NLSOUND +00034 { +00035 +00037 <font class="keyword">const</font> <a class="code" href="namespaceNLMISC.html#a183">TTime</a> <a class="code" href="namespaceNLSOUND.html#a19">ENV_CHK_INTERVAL</a> = 3000; +00038 +00039 +<a name="l00040"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a0">00040</a> CBackgroundSource::CBackgroundSource(CBackgroundSound *backgroundSource, <font class="keywordtype">bool</font> spawn, <a class="code" href="namespaceNLSOUND.html#a9">TSpawnEndCallback</a> cb, <font class="keywordtype">void</font> *cbUserParam) +00041 : CSourceCommon(backgroundSource, spawn, cb, cbUserParam) +00042 { +00043 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o0">_BackgroundSound</a> = backgroundSource; +00044 } +00045 +<a name="l00046"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a1">00046</a> CBackgroundSource::~CBackgroundSource() +00047 { +00048 <font class="keywordflow">if</font> (_Playing) +00049 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a5">stop</a>(); +00050 } +00051 +<a name="l00052"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a2">00052</a> <font class="keywordtype">void</font> CBackgroundSource::setSound( <a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>, CSoundContext *context) +00053 { +00054 <a class="code" href="debug_8h.html#a6">nlassert</a>(<font class="keyword">false</font>); +00055 } +00056 +<a name="l00057"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a3">00057</a> <a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> CBackgroundSource::getSound() +00058 { +00059 <font class="keywordflow">return</font> NULL; +00060 } +00061 +<a name="l00062"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a7">00062</a> <font class="keywordtype">void</font> CBackgroundSource::setGain( <font class="keywordtype">float</font> gain ) +00063 { +00064 CSourceCommon::setGain(gain); +00065 +00066 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end()); +00067 <font class="keywordflow">for</font> (; first != last; ++first) +00068 { +00069 <font class="keywordflow">if</font> (first->Source != 0) +00070 first->Source->setRelativeGain(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>); +00071 } +00072 } +<a name="l00073"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a8">00073</a> <font class="keywordtype">void</font> CBackgroundSource::setRelativeGain( <font class="keywordtype">float</font> gain ) +00074 { +00075 CSourceCommon::setRelativeGain(gain); +00076 +00077 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end()); +00078 <font class="keywordflow">for</font> (; first != last; ++first) +00079 { +00080 <font class="keywordflow">if</font> (first->Source != 0) +00081 first->Source->setRelativeGain(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>); +00082 } +00083 } +00084 +<a name="l00085"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a9">00085</a> <font class="keywordtype">void</font> CBackgroundSource::setPos( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>& pos ) +00086 { +00087 CSourceCommon::setPos(pos); +00088 +00089 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end()); +00090 <font class="keywordflow">for</font> (; first != last; ++first) +00091 { +00092 <font class="keywordflow">if</font> (first->Source != 0) +00093 first->Source->setPos(pos); +00094 } +00095 } +00096 +<a name="l00097"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a10">00097</a> <font class="keywordtype">void</font> CBackgroundSource::setVelocity( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>& vel ) +00098 { +00099 CSourceCommon::setVelocity(vel); +00100 +00101 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end()); +00102 <font class="keywordflow">for</font> (; first != last; ++first) +00103 { +00104 <font class="keywordflow">if</font> (first->Source != 0) +00105 first->Source->setVelocity(vel); +00106 } +00107 } +<a name="l00108"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a11">00108</a> <font class="keywordtype">void</font> CBackgroundSource::setDirection( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>& dir ) +00109 { +00110 CSourceCommon::setDirection(dir); +00111 +00112 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end()); +00113 <font class="keywordflow">for</font> (; first != last; ++first) +00114 { +00115 <font class="keywordflow">if</font> (first->Source != 0) +00116 first->Source->setDirection(dir); +00117 } +00118 } +00119 +00120 +00121 +<a name="l00122"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a4">00122</a> <font class="keywordtype">void</font> CBackgroundSource::play() +00123 { +00124 <font class="keywordflow">if</font> (_Playing) +00125 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a5">stop</a>(); +00126 +00127 CAudioMixerUser *mixer = CAudioMixerUser::instance(); +00128 +00129 <font class="keyword">const</font> vector<CBackgroundSound::TSoundInfo> &sounds = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o0">_BackgroundSound</a>->getSounds(); +00130 vector<CBackgroundSound::TSoundInfo>::const_iterator first(sounds.begin()), last(sounds.end()); +00131 +00132 <font class="keywordflow">for</font> (; first != last; ++first) +00133 { +00134 TSubSource subSource; +00135 subSource.Source = mixer->createSource(first->SoundName, <font class="keyword">false</font>); +00136 subSource.Filter = first->Filter; +00137 subSource.FadeStart = 0; +00138 subSource.FilterFadeIn = first->FilterFadeIn; +00139 subSource.FilterFadeOut = first->FilterFadeOut; +00140 +00141 <font class="keywordflow">if</font> (subSource.Source && <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c0">checkFilter</a>(subSource.Filter)) +00142 { +00143 subSource.Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u0">SUB_STATUS_PLAY</a>; +00144 subSource.Source->setRelativeGain(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>); +00145 subSource.Source->setPos(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n3">_Position</a>); +00146 subSource.Source->play(); +00147 } +00148 <font class="keywordflow">else</font> +00149 { +00150 subSource.Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u1">SUB_STATUS_STOP</a>; +00151 } +00152 +00153 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.push_back(subSource); +00154 } +00155 +00156 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o2">_LastCheck</a> = <a class="code" href="classNLMISC_1_1CTime.html#d1">NLMISC::CTime::getLocalTime</a>(); +00157 +00158 <font class="comment">// Set an event for next env checking.</font> +00159 mixer->addEvent(<font class="keyword">this</font>, <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o2">_LastCheck</a>+<a class="code" href="namespaceNLSOUND.html#a19">ENV_CHK_INTERVAL</a>); +00160 +00161 CSourceCommon::play(); +00162 } +00163 +<a name="l00164"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a5">00164</a> <font class="keywordtype">void</font> CBackgroundSource::stop() +00165 { +00166 <font class="keywordflow">if</font> (_Playing) +00167 { +00168 CAudioMixerUser *mixer = CAudioMixerUser::instance(); +00169 mixer->unregisterUpdate(<font class="keyword">this</font>); +00170 mixer->removeEvents(<font class="keyword">this</font>); +00171 +00172 <font class="keywordflow">while</font> (!<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.empty()) +00173 { +00174 TSubSource &subSource = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.back(); +00175 <font class="keywordflow">if</font> (subSource.Source != NULL) +00176 { +00177 <font class="comment">// subSource.Source->stop();</font> +00178 <font class="comment">//mixer->removeSource(subSource.Source);</font> +00179 <font class="keyword">delete</font> subSource.Source; +00180 +00181 } +00182 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.pop_back(); +00183 } +00184 } +00185 +00186 CSourceCommon::stop(); +00187 } +00188 +<a name="l00189"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c1">00189</a> <font class="keywordtype">void</font> CBackgroundSource::onUpdate() +00190 { +00191 <font class="comment">// this is called for fade in/out.</font> +00192 CAudioMixerUser *mixer = CAudioMixerUser::instance(); +00193 <font class="keywordtype">bool</font> doFade = <font class="keyword">false</font>; +00194 <a class="code" href="namespaceNLMISC.html#a183">TTime</a> now = <a class="code" href="classNLMISC_1_1CTime.html#d1">NLMISC::CTime::getLocalTime</a>(); +00195 <font class="keywordtype">float</font> gain; +00196 +00197 vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end()); +00198 <font class="keywordflow">for</font> (; first != last; ++first) +00199 { +00200 <font class="keywordflow">if</font> (first->Source != NULL) +00201 { +00202 <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u3">SUB_STATUS_FADEIN</a>) +00203 { +00204 <font class="keywordflow">if</font> (first->FilterFadeIn > 0) +00205 gain = (now - first->FadeStart) / float(first->FilterFadeIn); +00206 <font class="keywordflow">else</font> +00207 gain = 1.0f; +00208 +00209 <font class="keywordflow">if</font> (gain < 1.0f) +00210 { +00211 first->Source->setRelativeGain(gain); +00212 doFade = <font class="keyword">true</font>; +00213 } +00214 <font class="keywordflow">else</font> +00215 { +00216 <font class="comment">// fade end</font> +00217 first->Source->setRelativeGain(1.0f * <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>); +00218 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u0">SUB_STATUS_PLAY</a>; +00219 } +00220 } +00221 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u2">SUB_STATUS_FADEOUT</a>) +00222 { +00223 <font class="keywordflow">if</font> (first->FilterFadeOut > 0) +00224 gain = 1.0f - (now - first->FadeStart) / float(first->FilterFadeOut); +00225 <font class="keywordflow">else</font> +00226 gain = 0.0f; +00227 <font class="keywordflow">if</font> (gain > 0.0f) +00228 { +00229 first->Source->setRelativeGain(gain * <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>); +00230 doFade = <font class="keyword">true</font>; +00231 } +00232 <font class="keywordflow">else</font> +00233 { +00234 first->Source->stop(); +00235 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u1">SUB_STATUS_STOP</a>; +00236 } +00237 } +00238 } +00239 } +00240 +00241 <font class="comment">// any fade to update ?</font> +00242 <font class="keywordflow">if</font> (!doFade) +00243 mixer->unregisterUpdate(<font class="keyword">this</font>); +00244 } +00245 +<a name="l00246"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c2">00246</a> <font class="keywordtype">void</font> CBackgroundSource::onEvent() +00247 { +00248 <font class="comment">// check all sounds and test for start or stop.</font> +00249 CAudioMixerUser *mixer = CAudioMixerUser::instance(); +00250 +00251 <font class="keywordtype">bool</font> doFade = <font class="keyword">false</font>; +00252 <a class="code" href="namespaceNLMISC.html#a183">TTime</a> now = <a class="code" href="classNLMISC_1_1CTime.html#d1">NLMISC::CTime::getLocalTime</a>(); +00253 +00254 vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end()); +00255 <font class="keywordflow">for</font> (; first != last; ++first) +00256 { +00257 <font class="keywordflow">if</font> (first->Source != NULL) +00258 { +00259 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c0">checkFilter</a>(first->Filter)) +00260 { +00261 <font class="comment">// source ok</font> +00262 <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u1">SUB_STATUS_STOP</a>) +00263 { +00264 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u3">SUB_STATUS_FADEIN</a>; +00265 first->Source->setRelativeGain(0.0f); +00266 first->Source->setPos(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n3">_Position</a>); +00267 first->Source->play(); +00268 first->FadeStart = now; +00269 doFade = <font class="keyword">true</font>; +00270 } +00271 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u2">SUB_STATUS_FADEOUT</a>) +00272 { +00273 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u3">SUB_STATUS_FADEIN</a>; +00274 <font class="comment">// Replace fade start date to smoosly reverse the fade.</font> +00275 first->FadeStart = now - (first->FadeStart - first->FilterFadeOut); +00276 doFade = <font class="keyword">true</font>; +00277 } +00278 } +00279 <font class="keywordflow">else</font> +00280 { +00281 <font class="comment">// source masked.</font> +00282 <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u0">SUB_STATUS_PLAY</a>) +00283 { +00284 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u2">SUB_STATUS_FADEOUT</a>; +00285 first->FadeStart = now; +00286 doFade = <font class="keyword">true</font>; +00287 } +00288 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u3">SUB_STATUS_FADEIN</a>) +00289 { +00290 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u2">SUB_STATUS_FADEOUT</a>; +00291 <font class="comment">// Replace fade start date to smoosly reverse the fade.</font> +00292 first->FadeStart = now - (first->FadeStart - first->FilterFadeIn); +00293 doFade = <font class="keyword">true</font>; +00294 } +00295 } +00296 } +00297 } +00298 +00299 <font class="keywordflow">if</font> (doFade) +00300 { +00301 <font class="comment">// register for fade in/out</font> +00302 mixer->registerUpdate(<font class="keyword">this</font>); +00303 } +00304 +00305 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o2">_LastCheck</a> = <a class="code" href="classNLMISC_1_1CTime.html#d1">NLMISC::CTime::getLocalTime</a>(); +00306 +00307 <font class="comment">// set the next event.</font> +00308 mixer->addEvent(<font class="keyword">this</font>, <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o2">_LastCheck</a> + <a class="code" href="namespaceNLSOUND.html#a19">ENV_CHK_INTERVAL</a>); +00309 } +00310 +00311 +<a name="l00312"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c0">00312</a> <font class="keywordtype">bool</font> CBackgroundSource::checkFilter(<font class="keyword">const</font> UAudioMixer::TBackgroundFlags &filter) +00313 { +00314 <font class="comment">// Get the current environnement from the bakgound sound manager.</font> +00315 <font class="keyword">const</font> UAudioMixer::TBackgroundFlags &bg = CAudioMixerUser::instance()->getBackgroundSoundManager()->getBackgroundFlags(); +00316 +00317 <font class="keywordtype">bool</font> ok = <font class="keyword">true</font>; +00318 +00319 <font class="keywordflow">for</font> (uint i=0; i<16; ++i) +00320 ok &= filter.Flags[i] || !bg.Flags[i]; +00321 +00322 <font class="keywordflow">return</font> ok; +00323 } +00324 +00325 +00326 } <font class="comment">// NLSOUND</font> +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |